WO2017185429A1

WO2017185429A1 - Driving method and driver device for display panel

Info

Publication number: WO2017185429A1
Application number: PCT/CN2016/082298
Authority: WO
Inventors: 孙磊; 朱立伟; 谢剑军
Original assignee: 深圳市华星光电技术有限公司
Priority date: 2016-04-25
Filing date: 2016-05-17
Publication date: 2017-11-02
Also published as: CN105719614B; US10152930B2; CN105719614A; US20180166028A1

Abstract

A driving method and a driver device for a display panel. The method comprises: detecting whether a current data frame satisfies a predetermined switch criterion for switching from a first polarity mode to a second polarity mode (S101); if the current data frame satisfies the predetermined switch criterion, acquiring a polarity input signal corresponding to a preceding data frame (S102); acquiring, on the basis of the polarity input signal and of the positions of subpixels in the current frame, data compensation values corresponding to the subpixels (S103); in the second polarity mode, overlaying values of the subpixels of the current data frame with the corresponding data compensation values and then outputting to a display panel (S104). By such means, the problem of instantaneous flickering when switching from the first polarity mode to the second polarity mode is prevented.

Description

Driving method and driving device of display panel

[Technical Field]

The present invention relates to the field of liquid crystal display, and in particular to a driving method and a driving device for a display panel.

【Background technique】

In the structure of modern TFT-LCD display panels, VAC technology is generally used to improve the transparency and viewing angle of the display panel, but when the display panel is low gray scale, VAC technology will bring h-block problems at the same time.

In order to solve the h-block problem, it is generally solved by changing the polarity of each sub-pixel point in the display panel. However, at the moment of polarity switching, since the sub-pixels having the same polarity of two consecutive frames are lit by sub-pixels having different polarities, a problem of instantaneous flicker occurs.

[Summary of the Invention]

The technical problem to be solved by the present invention is to provide a driving method and a driving device for a display panel, which can solve the problem of instantaneous flicker occurring in polarity switching in the prior art.

In order to solve the above technical problem, another technical solution adopted by the present invention is to provide a driving method of a display panel, the method comprising: detecting whether a current data frame satisfies a schedule of switching a first polarity mode to a second polarity mode a switching condition; if the current data frame satisfies a predetermined switching condition, acquiring a polarity input signal corresponding to the previous data frame; and acquiring a data compensation value corresponding to each sub-pixel point according to the polarity input signal and the position of each sub-pixel point in the current data frame In the second polarity mode, the values of the sub-pixel points of the current data frame are superimposed with the corresponding data compensation values and output to the display panel; if the current data frame does not satisfy the predetermined switching condition, the current polarity mode will be current. The value of each sub-pixel point in the data frame is output to the display panel; wherein the step of detecting whether the current data frame satisfies the predetermined switching condition of switching the first polarity mode to the second polarity mode comprises: acquiring the gray level in the current data frame The number of sub-pixel points with the same value; Whether the number of sub-pixel points having the same gray-gradation value is greater than a predetermined number; if the number of sub-pixel points having the same gray-scale value is greater than a predetermined number, the current data frame satisfies a predetermined switching condition.

The step of acquiring the data compensation value corresponding to each sub-pixel point according to the polarity input signal and the position of the sub-pixel point in the current data frame includes: when the sub-pixel point in the current data frame is located at the first position, the previous data The grayscale value corresponding to the sub-pixel point of the first position is obtained in the frame and the current data frame, respectively recorded as the original grayscale value and the current grayscale value; and the bilinear interpolation method is used according to the original grayscale value and the current grayscale value. Obtaining a data compensation value in a data compensation table corresponding to the polarity input signal; wherein the first position is a position corresponding to the sub-pixel point having the same polarity when the first polarity mode is switched to the second polarity mode.

The step of acquiring the data compensation value corresponding to the sub-pixel point according to the polarity input signal and the position of the sub-pixel point in the current data frame further includes: when the sub-pixel point in the current data frame is in the second position, located in the second position The data compensation value corresponding to the sub-pixel point is zero; wherein the second position is a position corresponding to the sub-pixel point of the polarity when the first polarity mode is switched to the second polarity mode.

Wherein, when the polarity input signal is the first polarity signal, the polarity of each sub-pixel point in the first polarity mode is repeatedly arranged along the row and the column of the data frame in a positive, negative, negative, positive manner; When the polarity input signal is the second polarity signal, the polarity of each sub-pixel point in the first polarity mode is repeatedly arranged along the row and column of the data frame in a negative, positive, positive, and negative manner; wherein, the first polarity When the mode is switched to the second polarity mode, the polarity of each sub-pixel point in the second polarity mode is repeatedly arranged along the line of the data frame in a positive and negative manner.

In order to solve the above technical problem, another technical solution adopted by the present invention is to provide a driving method of a display panel, the method comprising: detecting whether a current data frame satisfies a schedule of switching a first polarity mode to a second polarity mode a switching condition; if the current data frame satisfies a predetermined switching condition, acquiring a polarity input signal corresponding to the previous data frame; and acquiring a data compensation value corresponding to each sub-pixel point according to the polarity input signal and the position of each sub-pixel point in the current data frame In the second polarity mode, the values of the sub-pixel points of the current data frame are superimposed with the corresponding data compensation values and output to the display panel.

The step of detecting whether the current data frame meets the predetermined switching condition of switching the first polarity mode to the second polarity mode comprises: acquiring the number of sub-pixel points having the same grayscale value in the current data frame; determining that the grayscale value is the same Whether the number of sub-pixels is greater than a predetermined number; if the sub-pixels have the same grayscale value The amount of the number is greater than the predetermined number, and the current data frame satisfies the predetermined switching condition.

The method further includes: if the current data frame does not satisfy the predetermined switching condition, outputting, in the first polarity mode, the value of each sub-pixel point in the current data frame to the display panel.

In order to solve the above technical problem, another technical solution adopted by the present invention is to provide a driving device for a display panel, the device comprising: a detecting module, configured to detect whether the current data frame is satisfied to switch the first polarity mode to the second a predetermined switching condition of the polarity mode, wherein a compensation enable signal is generated when the current data frame satisfies a predetermined switching condition;

The compensation selection signal generating module is connected to the detection module, and configured to generate a compensation selection signal according to the compensation enable signal generated by the detection module, the polarity input signal corresponding to the previous data frame, and the position of each pixel in the current data frame;

The compensation value acquisition module is connected with the compensation selection signal generation module for generating the compensation signal Obtaining a data compensation value corresponding to each pixel point in the current data frame under the control of the compensation selection signal generated by the raw module;

The output module is connected to the compensation value acquisition module, and is configured to superimpose the value of each sub-pixel point of the current data frame and the corresponding data compensation value acquired by the compensation value acquisition module in the second polarity mode, and output the data compensation value to the display panel.

The data compensation value acquisition module includes a first compensation unit, a second compensation unit, and a third compensation unit;

When the polarity input signal is the first polarity signal, and the sub-pixel point in the current data frame is in the first position, the compensation selection signal selects the first compensation unit to acquire the data corresponding to the sub-pixel point in the first position in the current data frame. Compensation value

When the polarity input signal is the second polarity signal, and the sub-pixel point in the current data frame is in the first position, the compensation selection signal selects the second compensation unit to acquire the data corresponding to the sub-pixel point in the first position in the current data frame. Compensation value

When the polarity input signal is the first polarity signal or the second polarity signal, when the sub-pixel point in the current data frame is in the second position, the compensation selection signal selects the third compensation unit to acquire the sub-position in the current data frame. The data compensation value corresponding to the pixel;

The first position is a position corresponding to a sub-pixel point having the same polarity when the first polarity mode is switched to the second polarity mode, and the second position is a polarity when the first polarity mode is switched to the second polarity mode. The position corresponding to the same sub-pixel point.

The first compensation unit and the second compensation unit are respectively configured to acquire gray scale values corresponding to the sub-pixel points of the first position in the previous data frame and the current data frame, and respectively record the original gray scale value and the current gray scale value. The data compensation value is obtained in the data compensation table corresponding to the polarity input signal by bilinear interpolation according to the original gray scale value and the current gray scale value.

The third compensation unit is a pass-through unit, and the data compensation value corresponding to the sub-pixel point of the second position in the current data frame acquired by the third compensation unit is zero.

The invention has the beneficial effects that the driving method and the driving device of the display panel of the invention pass the detection Whether the current data frame satisfies a predetermined switching condition for switching the first polarity mode to the second polarity mode; if the current data frame satisfies a predetermined switching condition, acquiring a polarity input signal corresponding to the previous data frame; according to the polarity input signal, The position of each sub-pixel in the current data frame acquires a data compensation value corresponding to each sub-pixel point; in the second polarity mode, the value of each sub-pixel point of the current data frame is superimposed with the corresponding data compensation value, and then output to the display panel. . In the above manner, the present invention can avoid the problem of instantaneous flicker that occurs when the first polarity mode is switched to the second polarity mode.

[Description of the Drawings]

1 is a schematic flow chart of a driving method of a display panel according to an embodiment of the present invention;

2 is a schematic diagram showing polarities of sub-pixel points in a first polarity mode;

3 is a schematic diagram showing polarities of respective sub-pixel points when the first polarity mode is switched to the second polarity mode;

Figure 4 is a schematic diagram of bilinear interpolation;

FIG. 5 is a schematic structural view of a driving device of a display panel according to an embodiment of the present invention.

【detailed description】

Certain terms are used throughout the description and the claims to refer to the particular embodiments. It will be understood by those skilled in the art that the <RTIgt; The present specification and claims do not use the difference in names as a means of distinguishing components, but rather as a basis for distinguishing between functional differences of components. The invention will now be described in detail in conjunction with the drawings and embodiments.

1 is a schematic flow chart of a driving method of a display panel according to an embodiment of the present invention. It should be noted that the method of the present invention is not limited to the sequence of the flow shown in FIG. 1 if substantially the same result is obtained. As shown in FIG. 1, the method includes the following steps:

Step S101: It is detected whether the current data frame satisfies a predetermined switching condition for switching the first polarity mode to the second polarity mode. If yes, step S102 is performed, otherwise step S105 is performed.

In step S101, the step of detecting whether the current data frame satisfies the predetermined switching condition of switching the first polarity mode to the second polarity mode comprises: acquiring the sub-pixel points of the current data frame having the same grayscale value a number; determining whether the number of sub-pixel points having the same gray-scale value is greater than a predetermined number; if the number of sub-pixel points having the same gray-scale value is greater than a predetermined number, the current data frame satisfies a predetermined switching condition.

In other words, the number of sub-pixels with the same grayscale value in the current data frame is greater than the predetermined number, that is, when the picture displayed by the current data frame is low grayscale, in order to avoid the H-block problem, the current The data frame is switched from the first polarity mode to the second polarity mode.

Step S102: Acquire a polarity input signal corresponding to the previous data frame.

In step S102, the polarity input signal corresponding to the previous data frame includes a first polarity signal and a second polarity signal, wherein the polarity input signal is accompanied by a change of the data frame at the first polarity signal and the second polarity Switch back and forth between signals. For example, when the first data frame corresponds to the first polarity signal, the second data frame corresponds to the second polarity signal, the third data frame continues to correspond to the first polarity signal, and the fourth data frame continues to correspond to the second polarity. The signal... loops in turn.

Step S103: Acquire a data compensation value corresponding to each sub-pixel point according to the polarity input signal and the position of each sub-pixel point in the current data frame.

In step S103, when the sub-pixel point in the current data frame is located at the first position, the step of acquiring the data compensation value corresponding to each sub-pixel point according to the polarity input signal and the position of each sub-pixel point in the current data frame is specifically : acquiring the grayscale value corresponding to the sub-pixel point of the first position in the previous data frame and the current data frame, respectively as the original grayscale value and the current grayscale value; using the double according to the original grayscale value and the current grayscale value The linear interpolation method obtains the data compensation value in the data compensation table corresponding to the polarity input signal.

The step of acquiring the data compensation value in the data compensation table corresponding to the polarity input signal by using the bilinear interpolation method according to the original gray scale value and the current gray scale value is specifically: acquiring a data compensation table corresponding to the polarity input signal; Obtaining, in the data compensation table, a first original grayscale value and a second original grayscale value adjacent to the original grayscale value, and a first current grayscale value and a second current grayscale value adjacent to the current grayscale value The first original grayscale value is smaller than the second original grayscale value, and the first current grayscale value is smaller than the second current grayscale value; the first original grayscale value and the first current grayscale are obtained in the data compensation table. Corresponding first data compensation value, a second original data value corresponding to the first original gray level value and the second current gray level value, a second original gray level value and a third data compensation value corresponding to the first current gray level value, Second original grayscale value and second a fourth data compensation value corresponding to the previous grayscale value; according to the first original grayscale value, the second original grayscale value, the first current grayscale value, the second current grayscale value, the first data compensation value, and the second data The compensation value, the third data compensation value, and the fourth data compensation value obtain the data compensation value corresponding to the original grayscale value and the current grayscale value.

The first position is a position corresponding to a sub-pixel point having the same polarity when the first polarity mode is switched to the second polarity mode.

Please refer to FIG. 2 and FIG. 3 together. FIG. 2 is a schematic diagram showing the polarity of each sub-pixel point in the first polarity mode, and FIG. 3 is the pole of each sub-pixel point when the first polarity mode is switched to the second polarity mode. Sexual map.

Wherein, when the polarity input signal is the first polarity signal, in the first polarity mode, as shown in FIG. 2A, the polarity of each sub-pixel point is positive, negative, negative, positive (+, -, - , +) The method is repeated along the rows and columns of the data frame. When the polarity input signal is the second polarity signal, in the first polarity mode, as shown in FIG. 2B, the polarity of each sub-pixel point is negative, positive, positive, negative (-, +, +, - The way is repeated along the rows and columns of the data frame. That is to say, under the first polarity signal and the second polarity signal, the polarity of each sub-pixel in the first polarity mode is exactly opposite.

Wherein, when the first polarity mode is switched to the second polarity mode, as shown in FIG. 3, the polarity of each sub-pixel point in the second polarity mode is along the data frame in a positive or negative (+, -) manner. The rows are repeated.

Those skilled in the art can understand that when the first polarity mode is switched to the second polarity mode, it can be switched from FIG. 2A to FIG. 3, or FIG. 2B can be switched to FIG. 3, and there are two different switching modes. It is determined by the polarity input signal.

Taking FIG. 2A as an example to switch to FIG. 3, the first position is a position corresponding to the sub-pixel point in the solid line frame in FIGS. 2A and 3. 2B is switched to FIG. 3 as an example, the first position is the position corresponding to the sub-pixel point in the dotted line frame in FIG. 2B and FIG. 3.

Since the polarity of the sub-pixels is the same when the first position is switched to the second polarity mode, the data compensation value corresponding to the sub-pixel points needs to be acquired to improve the gray corresponding to the sub-pixel points. The order value, in turn, solves the problem of instantaneous flicker.

Specifically, taking the sub-pixel point A located at the first position as an example, the operation of acquiring the data compensation value corresponding to the sub-pixel point A is specifically: acquiring the sub-pixel point A in the previous data frame and the current data frame. The gray scale values should be recorded as the original gray scale value x and the current gray scale value y, respectively.

Obtain a data compensation table corresponding to the polarity input signal, wherein the data compensation table is as follows:

The horizontal axis of the table represents the original grayscale value, the vertical axis of the table represents the current grayscale value, and the content in the table is the original grayscale value and the data compensation value corresponding to the current grayscale value. Those skilled in the art can understand that the content in the table of the data compensation table in the above figure is only an example, and the invention is not limited thereto.

In this embodiment, when the polarity input signal is the first polarity signal, the first data compensation table is used, and when the polarity input signal is the second polarity signal, the second data compensation table is used. The first data compensation table and the second data compensation table are the same as the layout of the data compensation table, and the contents of the first data compensation table and the second data compensation table are different. In other words, the first data compensation table is switched to the switching mode of FIG. 3 corresponding to FIG. 2A, and the second data table is switched to the switching mode of FIG. 3 corresponding to FIG. 2B.

Obtaining the first original grayscale value x1 and the second original grayscale value x2 adjacent to the original grayscale value x in the data compensation table, and assuming that the original grayscale value x is 76, the first original grayscale value x1 is 64, The second original grayscale value x2 is 80. Obtaining a first current grayscale value y1 and a second current grayscale value y2 adjacent to the current grayscale value y in the data compensation table, and assuming that the current grayscale value y is 115, the first current grayscale value y1 is 112, the first The current gray scale value y2 is 128. Obtaining, in the data compensation table, a first data offset value Q1 corresponding to the first current grayscale value x1 and a first current grayscale value y1, a first original grayscale value x1, and a second current grayscale a second data compensation value Q12 corresponding to the value y2, a second original grayscale value x2 and a third data compensation value Q21 corresponding to the first current grayscale value y1, a second original grayscale value x2 and a second current grayscale value y2 Corresponding fourth data compensation value Q22. The first data compensation value Q11, the second data compensation value Q12, the third data compensation value Q21, and the fourth data compensation value Q22 are 40, 40, 28, and 32, respectively.

Please refer to FIG. 4 together. FIG. 4 is a schematic diagram of bilinear interpolation. As shown in FIG. 4, in order to calculate the data compensation value corresponding to the original grayscale value x and the current grayscale value y, that is, the value of P, first linear interpolation is performed in the X direction, and the values of R1 and R2 are calculated, and then in the Y direction. Linear interpolation, the value of P is calculated from the values of R1 and R2.

Specifically, R1 is calculated according to the following formula:

Calculating the value of R1 by substituting the original grayscale value x, the first original grayscale value x1, the second original grayscale value x2, the first data compensation value Q11, and the third data compensation value Q21 into the above formula, that is, The data compensation value corresponding to the original grayscale value x and the first current grayscale value y1.

Undertake the above examples,

Specifically, R2 is calculated according to the following formula:

Substituting the original grayscale value x, the first original grayscale value x1, the second original grayscale value x2, the second data compensation value Q12, and the fourth data compensation value Q22 into the above formula, the value of R2 can be calculated, that is, The data compensation value corresponding to the original grayscale value x and the second current grayscale value y2.

Undertake the above examples,

Specifically, P is calculated according to the following formula:

By substituting the current grayscale value y, the first current grayscale value y1, the second current grayscale value y2, the value of R1, and the value of R2 into the above formula, the value of P, that is, the original grayscale value x and The data compensation value corresponding to the current grayscale value y.

Undertake the above examples,

That is, the data compensation value corresponding to the sub-pixel point A is 31.5.

In this embodiment, when the sub-pixel point in the current data frame is in the second position, the data compensation value corresponding to the sub-pixel point located in the second position is zero. The second position is a position of a sub-pixel point having a polarity different when the first polarity mode is switched to the second polarity mode. In other words, since the polarity of the sub-pixel points is different when the second position is switched to the second polarity mode in the first polarity mode, it is not necessary to compensate for such pixel points.

Step S104: Superimpose the value of each sub-pixel point in the current data frame with the corresponding data compensation value in the second polarity mode, and output the result to the display panel.

In step S104, in the second polarity mode, the current grayscale value of the sub-pixel point located at the first position is superimposed with the data compensation value, and then output to the display panel, wherein the superimposition may be the current grayscale value and the corresponding The data compensation values are added, and the current grayscale value may be subtracted from the corresponding data compensation value, which is determined according to actual conditions. The current grayscale value of the sub-pixel point located at the second position is directly output to the display panel.

Those skilled in the art can understand that after the current data frame is displayed, the next data frame does not need to continue data compensation, but is directly output to the display panel. In addition, the polarity of each pixel in the next data frame is opposite to the polarity of each pixel shown in FIG.

Step S105: Output the value of each sub-pixel point in the current data frame to the display panel in the first polarity mode.

In step S105, when the step S101 detects that the current data frame does not satisfy the predetermined switching condition of switching the first polarity mode to the second polarity switching mode, each sub-pixel point in the current data frame is in the first polarity mode. The current grayscale value is output to the display panel.

Wherein, if the polarity input signal of the previous data frame is the first polarity signal, the polarity of each pixel point in the current data frame is as shown in FIG. 2B. If the polarity input signal of the previous data frame is the second polarity signal, the polarity of each pixel in the current data frame is as shown in FIG. 2A.

FIG. 5 is a schematic structural view of a driving device of a display panel according to an embodiment of the present invention. As shown in FIG. 5, the driving device includes a detecting module 11, a compensation selection signal generating module 12, a compensation value acquiring module 13, and an output module 14.

The detecting module 11 is configured to detect whether the current data frame data satisfies a predetermined switching condition for switching the first polarity mode to the second polarity mode, where the compensation enable signal composation-en is generated when the current data frame satisfies a predetermined switching condition .

The compensation selection signal generating module 12 is connected to the detection module 11 for generating the compensation enable signal componation-en generated by the detection module 11, the polarity input signal polar corresponding to the previous data frame, and the position of each pixel in the current data frame. Compensation selection signal mode-sel.

The compensation value acquisition module 13 is connected to the compensation selection signal generation module 12 for acquiring the data compensation value corresponding to each pixel point in the current data frame under the control of the compensation selection signal mode-sel generated by the compensation selection signal generation module 12.

The compensation value acquisition module 13 includes a first compensation unit 131, a second compensation unit 132, and a third compensation unit 133. When the polarity input signal is the first polarity signal, and the sub-pixel point in the current data frame is in the first position, the compensation selection signal mode-sel selects the first compensation unit 131 to acquire the sub-pixel point of the first position in the current data frame. Corresponding data compensation value; when the polarity input signal is the second polarity signal, when the sub-pixel point in the current data frame is in the first position, the compensation selection signal mode-sel selects the second compensation unit 132 to acquire the current data frame. a data compensation value corresponding to the sub-pixel point of the first position; when the polarity input signal is the first polarity signal or the second polarity signal, and the sub-pixel point in the current data frame is located at the second position, the compensation selection signal mode The third compensation unit 133 selects a data compensation value corresponding to the sub-pixel point of the second position in the current data frame; wherein the first position is the same polarity when the first polarity mode is switched to the second polarity mode The position of the sub-pixel point, which is the position of the sub-pixel point whose polarity is not the same when the first polarity mode is switched to the second polarity mode.

Specifically, the first compensation unit 131 and the second compensation unit 132 are respectively configured to acquire grayscale values corresponding to the sub-pixel points of the first position in the previous data frame and the current data frame, respectively, and record the original grayscale values and The current grayscale value; the data compensation value is obtained in the data compensation table corresponding to the polarity input signal by bilinear interpolation according to the original grayscale value and the current grayscale value.

Wherein, when the polarity input signal is the first polarity signal, the data compensation table is a first data compensation table, and the first data compensation table is set in the first compensation unit 131. When the polarity input signal is the second In the case of the polarity signal, the data compensation table is a second data compensation table, and the second data compensation table is set in the second compensation unit 132.

The third compensation unit 133 is a pass-through unit, and the data compensation value corresponding to the sub-pixel point of the second position in the current data frame acquired by the third compensation unit 133 is zero.

The output module 14 is connected to the compensation value acquisition module 13 for superimposing the value of each sub-pixel point and the corresponding data compensation value acquired by the compensation value acquisition module in the second polarity mode, and outputting the result to the display panel and the first pole. In the sexual mode, the value of each sub-pixel point in the current data frame is output to the display panel.

The invention has the beneficial effects that the driving method and the driving device of the display panel of the present invention detect whether the current data frame satisfies a predetermined switching condition for switching the first polarity mode to the second polarity mode; if the current data frame satisfies the predetermined switching Condition, obtaining a polarity input signal corresponding to the previous data frame; acquiring a data compensation value corresponding to each sub-pixel point according to the polarity input signal, the position of each sub-pixel point in the current data frame; and the current polarity in the second polarity mode The value of each sub-pixel of the data frame is superimposed with the corresponding data compensation value and output to the display panel. In the above manner, the present invention can avoid the problem of instantaneous flicker that occurs when the first polarity mode is switched to the second polarity mode.

The above is only the embodiment of the present invention, and is not intended to limit the scope of the invention, and the equivalent structure or equivalent process transformations made by the description of the invention and the drawings are directly or indirectly applied to other related technologies. The fields are all included in the scope of patent protection of the present invention.

Claims

A driving method of a display panel, wherein the method comprises:

Detecting whether the current data frame satisfies a predetermined switching condition for switching the first polarity mode to the second polarity mode;

And if the current data frame meets the predetermined switching condition, acquiring a polarity input signal corresponding to the previous data frame;

Obtaining, according to the polarity input signal, a position of each sub-pixel point in the current data frame, a data compensation value corresponding to each of the sub-pixel points;

And superimposing the values of the sub-pixel points of the current data frame and the corresponding data compensation values in the second polarity mode, and outputting the values to the display panel;

If the current data frame does not satisfy the predetermined switching condition, output the value of each sub-pixel point in the current data frame to the display panel in the first polarity mode;

The step of detecting whether the current data frame meets a predetermined switching condition for switching the first polarity mode to the second polarity mode includes:

Obtaining, by the current data frame, a number of sub-pixel points having the same grayscale value;

Determining whether the number of sub-pixel points having the same grayscale value is greater than a predetermined number;

If the number of sub-pixel points having the same grayscale value is greater than a predetermined number, the current data frame satisfies the predetermined switching condition.
The method according to claim 1, wherein the step of acquiring the data compensation value corresponding to each of the sub-pixel points according to the polarity input signal and the position of the sub-pixel point in the current data frame comprises:

When the sub-pixel point in the current data frame is in the first position, the gray-scale values corresponding to the sub-pixel points in the first position are acquired in the previous data frame and the current data frame, and are respectively recorded as An original grayscale value and a current grayscale value; obtaining the data compensation value in a data compensation table corresponding to the polarity input signal by using a bilinear interpolation method according to the original grayscale value and the current grayscale value ;

The first position is a position corresponding to the sub-pixel point having the same polarity when the first polarity mode is switched to the second polarity mode.
The method of claim 2, wherein the step of acquiring the data compensation value corresponding to the sub-pixel point according to the polarity input signal and the position of the sub-pixel point in the current data frame further comprises:

When the sub-pixel point in the current data frame is located at the second location, the data compensation value corresponding to the sub-pixel point located in the second location is zero;

The second position is a position corresponding to the sub-pixel point whose polarity is different when the first polarity mode is switched to the second polarity mode.
The method according to claim 2, wherein when the polarity input signal is a first polarity signal, the polarity of each sub-pixel point in the first polarity mode is positive, negative, negative, positive The pattern is repeatedly arranged along the rows and columns of the data frame;

When the polarity input signal is the second polarity signal, the polarity of each sub-pixel point in the first polarity mode is repeatedly arranged along the row and column of the data frame in a negative, positive, positive, and negative manner;

Wherein, when the first polarity mode is switched to the second polarity mode, the polarities of the sub-pixel points in the second polarity mode are repeatedly arranged along the rows of the data frame in a positive and negative manner.
A driving method of a display panel, wherein the method comprises:

Detecting whether the current data frame satisfies a predetermined switching condition for switching the first polarity mode to the second polarity mode;

And if the current data frame meets the predetermined switching condition, acquiring a polarity input signal corresponding to the previous data frame;

Obtaining, according to the polarity input signal, a position of each sub-pixel point in the current data frame, a data compensation value corresponding to each of the sub-pixel points;

And superposing the values of the sub-pixel points of the current data frame and the corresponding data compensation values in the second polarity mode, and outputting the values to the display panel.
The method of claim 5, wherein said detecting whether said current data frame is satisfied The step of switching the first polarity mode to the predetermined switching condition of the second polarity mode includes:

Obtaining, by the current data frame, a number of sub-pixel points having the same grayscale value;

Determining whether the number of sub-pixel points having the same grayscale value is greater than a predetermined number;

If the number of sub-pixel points having the same grayscale value is greater than a predetermined number, the current data frame satisfies the predetermined switching condition.
The method according to claim 5, wherein the step of acquiring the data compensation value corresponding to each of the sub-pixel points according to the polarity input signal and the position of the sub-pixel point in the current data frame comprises:

When the sub-pixel point in the current data frame is in the first position, the gray-scale values corresponding to the sub-pixel points in the first position are acquired in the previous data frame and the current data frame, and are respectively recorded as An original grayscale value and a current grayscale value; obtaining the data compensation value in a data compensation table corresponding to the polarity input signal by using a bilinear interpolation method according to the original grayscale value and the current grayscale value ;

The first position is a position corresponding to the sub-pixel point having the same polarity when the first polarity mode is switched to the second polarity mode.
The method of claim 7, wherein the step of acquiring the data compensation value corresponding to the sub-pixel point according to the polarity input signal and the position of the sub-pixel point in the current data frame further comprises:

When the sub-pixel point in the current data frame is located at the second location, the data compensation value corresponding to the sub-pixel point located in the second location is zero;

The second position is a position corresponding to the sub-pixel point whose polarity is different when the first polarity mode is switched to the second polarity mode.
The method according to claim 7, wherein when the polarity input signal is a first polarity signal, the polarity of each sub-pixel point in the first polarity mode is positive, negative, negative, positive The pattern is repeatedly arranged along the rows and columns of the data frame;

When the polarity input signal is the second polarity signal, the polarity of each sub-pixel point in the first polarity mode is repeatedly arranged along the row and column of the data frame in a negative, positive, positive, and negative manner;

Wherein, when the first polarity mode is switched to the second polarity mode, the polarities of the sub-pixel points in the second polarity mode are repeatedly arranged along the rows of the data frame in a positive and negative manner.
The method of claim 5 wherein the method further comprises:

If the current data frame does not satisfy the predetermined switching condition, outputting values of the sub-pixel points in the current data frame to the display panel in the first polarity mode.
A driving device for a display panel, wherein the device comprises:

a detecting module, configured to detect whether the current data frame meets a predetermined switching condition for switching the first polarity mode to the second polarity mode, where the compensation enable signal is generated when the current data frame meets the predetermined switching condition ;

a compensation selection signal generating module, configured to be connected to the detection module, configured to generate, according to the compensation enable signal generated by the detection module, a polarity input signal corresponding to a previous data frame, and each pixel point in the current data frame Position generating a compensation selection signal;

a compensation value obtaining module, configured to be connected to the compensation selection signal generating module, configured to acquire, according to the compensation selection signal generated by the compensation selection signal generating module, a data compensation value corresponding to each pixel point in the current data frame ;

And an output module, configured to be connected to the compensation value acquisition module, configured to: in the second polarity mode, the value of each of the sub-pixel points of the current data frame and the corresponding value acquired by the compensation value acquisition module The data compensation values are superimposed and output to the display panel.
The apparatus according to claim 11, wherein the data compensation value acquisition module comprises a first compensation unit, a second compensation unit, and a third compensation unit;

When the polarity input signal is a first polarity signal, and the sub-pixel point in the current data frame is in the first position, the compensation selection signal selects the first compensation unit to acquire the current data frame. a data compensation value corresponding to the sub-pixel point of the first location;

When the polarity input signal is a second polarity signal, and the sub-pixel point in the current data frame is in the first position, the compensation selection signal selects the second compensation unit to acquire the current data frame a data compensation value corresponding to the sub-pixel point of the first location;

When the polarity input signal is the first polarity signal or the second polarity signal, when the sub-pixel point in the current data frame is in the second position, the compensation selection signal selects the third The compensation unit acquires a data compensation value corresponding to the sub-pixel point of the second position in the current data frame;

The first position is a position corresponding to the sub-pixel point having the same polarity when the first polarity mode is switched to the second polarity mode, and the second position is the first polarity The mode switches to a position corresponding to the sub-pixel point of which the polarity is different when the second polarity mode is switched.
The apparatus according to claim 12, wherein said first compensation unit and said second compensation unit are respectively configured to acquire sub-pixels of said first position in said previous data frame and said current data frame Gray scale values corresponding to points are respectively recorded as original gray scale values and current gray scale values; according to the original gray scale values and the current gray scale values, bipolar interpolation is used to correspond to the polarity input signals The data compensation value is obtained in the data compensation table.
The device according to claim 12, wherein the third compensation unit is a pass-through unit, and the data corresponding to the sub-pixel point of the second position in the current data frame acquired by the third compensation unit The compensation value is zero.